Process and apparatus for seasoning and rectifying paper-stock



G. E. POGGEL. PROCESS AND APPARATUS FOR SEASONING AND HECTIFYING PAPER STOCK. APPLICATION FILED SEPT-24, 1917 i ,325,04;4. Patented Dec. 16,1919.

INVENTOR GEORGE. EFOGGEL UNITED STATES PATENT OFFICE.

GEORGE E. roeenn, o'r' LouIsvrLLE, KENTUCKY.

PROCESS AND APPARATUS FOR SEASONING- AND RECTIFYING PAPER-STOCK.

Specification of Letters Patent.

Patented Dec. 16, 1919.

Application filed September 24, 1917. Serial No. 192,939.

To all whom it may concern:

Be it known that I, GEORGE E. Pocenn, a citizen of the United States, residing at Louisville, county of Jefferson, State of Kentucky, have invented certain new and useful Improvements in Processes and Apparatus for Seasoning and Rectifying' Paper-Stock, of which the following is a specification.

' This invention relates to a process and apparatus for seasoning and rectifying paper stock.

In the printing or lithographing of register work, it is the general practice to thoroughly season the paper stock prior to printing. The general practice has been to lay the stock out in small piles in racks and to suspend them in such manner that there may be a free circulation of air through the stock so that moisture may be eliminated and the paper dried. Considerable space has heretofore been required for this purpose and such space is not available for other uses due to the fact that a relatively high temperature is usually maintained. It has been proposed to use electric fans for blowing the air through the paper stock, to

expedite seasoning, but this method is not always reliable when carried on in a large cause it is impossible to register the remaining colors required for completion of the work when the paper has stretched due to the absorption of moisture.

My process and apparatus reduce the' time and space required to season paper stock and insure substantially perfect condition of the stock regardless of climatic conditions prevailing where the stock is rectified or seasoned.

In carrying out the process there is employed heating means, a fan forblowing air heated by said means into contact with the paper stock which is to be seasoned or rectified, and an inclosure for causing cireulation of the heated air, in a novel manner,

so that it will pass and repass the stock.

The apparatus for carrying out the invention is self-contained and can be located at any desired point and moved from place to place. The paper is suspended from supports and the apparatus, which is-portable,

can be disposed in relation to paperin any desired locality, used to dry or season the paper, and then moved to another locality to treat other paper stock suspended by other supports. The invention is not limited, however, to the support of the paper independently of the seasoning or drying means. y

In the accompanylng drawings,

Figure 1 is a side elevation of the dry-- ing apparatus by itself.

Fig. 2 is a similar View showing the drying apparatus and paper support arranged for treatment of the paper, the cover or top being removed.

Fig. 3 is a side elevation taken at right angles to Fig. 1 but showing the top in position.

Fig. V4 is a front elevation, the door being removed, the top being in position and the apparatus in use; 1

Fig. 5 is a horizontal 'section on the line 44 of Fig. 4.-

Fig.6 a diagram of the circuits for the heaters" and fan.

The invention is shown as embodying a paper support or rack which is separate from the drying apparatus, but I wish it to .be understood that I do not limit the invention to such an arrangement.

The rack for supporting the paper sheets 1'1 comprises upright rods 8 supported in floor flanges 5 and connected by braces 25, couplings 9-being provided for that purpose. The parallel sets of upright rods 8- are connected by paper supporting rods 24 from which the paper sheets 11 are suspended by hangers 10 of any suitable form,

permitting the paper to be readily applied to or detached therefrom. In practice the paper stock 11 suspended from eachrod 24 comprises from sixty to seventy-five sheets according to the thickness of the stock.

The portable means for effecting drying and seasoning of the paper 11 comprises a box-like oven or structure supported by casters 22 so that it may be moved from place to place and positioned relatively to the sets of rods 8, 25, 24 used for suspending the paper stock 11. This permits treatare removable, being provided with handles 15 by which they may be taken ofi or placed in position and held by catches 14 and 16. These walls are of such a size that the openings they cover are of. ample dimensions to permit the paper stock 11 to be readily passed therethrough when suspending it by the hangers 10 or removing it therefrom. The sides 17 are stationary, the lower portions thereof being provided with inner parallel walls 23 to provide vertical channels. Movable panels 12 .hinged at their lower ends 12 to the upper edges of walls 23 in any suitable manner, define, between themselves and the wallsl7, the remaining portions of a double-walled structure through which the heated air currents may dive and pass into the spaces between the walls 23 and 17 as shown by the long arrows in Fig. 1. The upper, the free, ends of the panels 12 are designed to rest against the edges of the suspended paper sheets 11. When the stock 11 is placed in position or removed, the panels 12 are moved aside by hand, but during operation, or carrying out of the drying or curing process, these panels remain as shown in Fig. 1. The top 13 is removable to permit the drying apparatus to be rolled underthe rods 24: and between the upright rods 8.

Supported by the bottom of the appa-' ratus, in a stand 7, is a stem 6 which is adjustable up and down and may be secured, where adjusted, by a set screw 6. Carried by the stem 6 isa fan 2 whose blades are arranged to revolve ina horizontal plane. .Secured to, and supported by, the fan casing in any suitable manner are radiating tubular arms ,3 which carry electrical resistance heaters 1 which are located above the fan 2. The different electrical heaters 1 are controlled by switches 19 and 20. As shown in Fig. 6, the fan 2 is controlled by the main knife switch 21 and runs whenever said switch is closed, regardless of whether the heaters l are on or not.

The heaters 1 are arranged in pairs in respective circuits controlled by the switches 19 and 20. Either switch, 19, 20, or both,

may be open or closed, affording the volume 1 are in use, variation 111 the temperature may be had to meet requirements of the paper stock being treated. Raising and loweringthe fan 2 and heaters 1 and setting them by the set screw 6 where desired, enables them to be brought close to the lower ends of the sheets 11 so that the current of air forced by the fan causes the paper to flare out and separate which allows for quick curing of the paper.

The hollow stem 6 and tubular arms 3 contain the wires leading from the switches 19, 20, 21 to the fan and heaters, so that there are no protruding parts to interfere with the operation of the fan or the free passage of the air.

Operation: The apparatus having been moved to proper position between the uprights 8, the front wall 18 is removed and the panels or inner walls 12 held back.

The stock is then suspended by the hangers 10 from the rods 24. The panels 12 are thenallowed to rest against the stock as shown in Fig. 4. Thetop 13, which was previously off, is now placed in position and the front wallv 18 closed and held by the catches 14 and 16. The parts are then in the condition shown in Fig. 4, the paper stock 11 being completely inclosed .within flected and dives down between the panels 12 and the sides 18, thencepassingbetween the inner walls 23 and the sides and reacting against the bottom of the shell only to beagain blown upwardly by the fan and heated by the electrical heaters 1. In practice a temperature of 135 degrees is at-- tained in a few. minutes, and if this temperature is maintained for a period of, say, twenty minutes, all of the moisture will be baked out of the stock 11. The switches 18 and 20 are then opened to cut ofi the heat and the front and rear walls removed while the fan 2 is allowed to continue to:

run for a few minutes longer, during which period the temperature of the stock is reduced to the temperature for printing.

Having thus described my invention, what I claim asnew and desire to secure by Letters Patent is 1. The process of seasoning and rectifying paper stock-consistin in blowing currents of' heated air upwar 1y between the sheets while the latter are suspended within an inclosure and conducting the heated air, after passage between the sheets, exteriorly thereof back to the point where it is blown between the sheets, thereby maintaining a cycle of travel. of the airso that it is made to pass:

'the sheets, thereby maintaining cycles of 15' travel of the heated air during such passing and repassing thereof.

3. An apparatus for seasoning and retifying paper stock comprising a shell or inclosing structure for the paper stock, means for suspending the paper stock therein, heat producing means, and a fan for blowing air heated by said heating means upwardly into contact with the paper stock suspended within the inclosing structure.

4:. An apparatus for seasoning and rectifying paper stock comprising a shell or in-' closing structure for the paper stock, means for suspending the paper stock therein, heat producing means, and a fan for blowing air heated by said heating means upwardly into contact with the paper stock, said shell or inclosure being provided with diving flues for returning the air to the fan, whereby the currents of air forced upwardly by the fan travel in cycles and are repeatedly repa'ssed in contact with the sheets of the stock. 5. In an apparatus for seasoning and rectifying paper stock, the combination with a a shell or inclosure, of means for suspending paper stock therein, hinged walls or panels adapted to rest against the paper stock and which define, in connection with walls of the shell, diving flues a fan, and

heating means arranged so that air blown' from said fan passes over said heating I means, thereby directing heated currents of air to the sheets of the paper stock and in ducing air currents which, after traversing the sheets ofthe stock, dive down the lines aforesaid for re-blowing, re-heating and repassage of the paper stock.

6. In an apparatus for seasoning and rectifying paper stock, the combination with a rack forsuspending the stock, of a shell or inclosure having a removable top, hinged panels carried by the shell or inclosure which are adapted to rest against the paper stock when the latter is in position within the shell or inclosure, heating means and ,a fan carried by the shell or inclosure and adjustable in relation to the paper stock so that they maybe set according to the size of the stock being treated, said fan being adapted to blow air over said heating means and into 65 contact with the paper stock and to create currents of heated air which travel in cycles and dive down the fines defined between the panels and the walls of the shell or inclosure.

7 The process of seasoning and rectifying paperstock cons isting in forcibly blowing a current of heated air through the paper stock when confined in an inclosure, I and afterward exposing the paper stock. to

the outer air and blowing cooler air thereagainst. v Y

8. In an apparatus for seasoning and rectifying paper stock, the combination with means for suspending paper stock, of a bodily movable shell or housing adapted to be shifted into inclosing relation to the paper stock, or, away therefrom, and means for drying the paper when the shell isarranged in inclosing relation to the latter.

9. In an apparatus for seasoning and rec- I tifying paper stock, the combination with means for suspending paper stock, of a .bodily movable shell or housing adapted to stock, or, away therefrom, and a'fan and heater carried by and movable with said shell, adapted for supplying heated .air to the paper when the shell is' in inclosing relation to-the latter.

In. testimony whereof, I hereunto afiix my signature.

. GEORGE E. 'POGGEL.

' beshifted into inclosing relation to the paper. 

